[[Charles Lyell]] supported Hutton's idea in 1830, in ''Principles of Geology'' <ref name="ingv" />, a book that later influenced [[Darwin]]. The latter claimed that'' "I always feel as if my books came half out of Lyell's brains"'' and that ''"the great merit of the Principles, was that it altered the whole tone of one's mind & therefore that when seeing a thing never seen by Lyell, one yet saw it partially through his eyes."''<ref>{{cite web |title=Darwin Correspondence Database: Darwin, C. R. to Horner, Leonard 29 Aug 1844 |author=Ch.Darwin |publisher=Darwin Correspondence Project by Cambridge University Library |url=http://www.darwinproject.ac.uk/letter/entry-771 |accessdate=May 17, 2015}}</ref> | [[Charles Lyell]] supported Hutton's idea in 1830, in ''Principles of Geology'' <ref name="ingv" />, a book that later influenced [[Darwin]]. The latter claimed that'' "I always feel as if my books came half out of Lyell's brains"'' and that ''"the great merit of the Principles, was that it altered the whole tone of one's mind & therefore that when seeing a thing never seen by Lyell, one yet saw it partially through his eyes."''<ref>{{cite web |title=Darwin Correspondence Database: Darwin, C. R. to Horner, Leonard 29 Aug 1844 |author=Ch.Darwin |publisher=Darwin Correspondence Project by Cambridge University Library |url=http://www.darwinproject.ac.uk/letter/entry-771 |accessdate=May 17, 2015}}</ref> |